Steam Boiler Piping - Smith 28HE Series Installation & Operating Instructions Manual

SERIES 28HE STEAM BOILER INSTALLATION AND OPERATION INSTRUCTIONS
Figure 16 - Relief & Safely Valve Piping
Table 7- Boiler Water Content
Boiler Model Steam Boilers
Gallons
28HE-4 104
28HE-5 126
28HE-6 148
28HE-7 170
28HE-8 192
28HE-9 214
28HE-10 236
28HE-11 258
28HE-12 280
28HE-13 302
28HE-14 324
28HE-15 346
28HE-16 368
28HE-17 399
28HE-18 412
Control Installation
Locate the temperature & pressure gage, low water cutoff,
high limit and operating controls per Figures 14 & 18.
Optional controls must be installed in accordance with the
control manufacturers instructions and Figures 14 & 18.
Note: The front jacket panel MUST be installed before
any controls are attached to the front boiler section!
CAUTION: The controls must be mounted in the
correct location and according to the control
manufacturer's instructions or the boiler may not
function properly!
Liters
394
477
560
644
727
810
893
977
1060
1143
1227
1310
1393
1511
1560
Water Column Piping
A variety of water level controls are available for the
28HE. The water column piping needed to properly
mount each control is available from Smith. Figure 18
shows a typical water column piping arrangement. The
1 in. NPT x 7 1/2 in. nipple is always installed in the
lower water column tapping, Figures 14 & 18 and Table
5.

STEAM BOILER PIPING

Steam Boiler Piping Connections
Table 3 contains the steam riser location schedule. Riser,
equalizer and header pipe sizes are located in Table
8. A typical single boiler piping arrangement is shown
in Figure 22. Figures 23 & 24 contain typical piping
diagrams for steam boilers in a battery.
NOTE: See CLEANING OF STEAM BOILERS before
connecting the return piping.
CAUTION: Improper placement of steam risers will
result in poor steam quality!
Table 8 - Steam Boiler Piping Sizes
Boiler Number of
Model 5" NPT Risers Size, NPT
4 & 5 1
6 & 7 2
8 Through 10 2
11 Through 18 3
The steam piping should be pitched so the condensate
fl ows in the direction of steam travel. The return tappings
should be yoked to equalize the return fl ow. Swing joints
should be used.
Figure 18 - Boiler Control Locations
Page 15
Header Equalizer
Size, NPT
5" 2 1/2"
5" 2 1/2"
6" 4"
8" 4"